package jdbc_practice;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class LoginDemo {
    public static void main(String[] args) {

        try(Connection connection = DBUtil.getConnection();) {
            String sql = "SELECT  u.username,u.password " +
                    "FROM user u " +
                    "WHERE username = ?"+
                    "AND password = ?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,"张三");
            ps.setString(2,"666666");
            ResultSet rs = ps.executeQuery();
            if(rs.next()){
                System.out.println("登录成功");
            }else{
                System.out.println("登录失败");

            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
